<template>
  <div>
    <vxe-button status="success" @click="getSelectEvent">获取已选</vxe-button>
    <vxe-grid
      ref="gridRef"
      v-bind="gridOptions"
      @page-change="pageChangeEvent">
    </vxe-grid>
  </div>
</template>

<script lang="ts">
import Vue from 'vue'
import { VxeUI, VxeGridInstance, VxeGridProps } from 'vxe-table'

interface RowVO {
  id: number
  name: string
  role: string
  sex: string
  age: number
  address: string
}

const allList = [
  { id: 10001, name: 'Test1', nickname: 'T1', role: 'Develop', sex: 'Man', age: 28, address: 'Shenzhen' },
  { id: 10002, name: 'Test2', nickname: 'T2', role: 'Test', sex: 'Women', age: 22, address: 'Guangzhou' },
  { id: 10003, name: 'Test3', nickname: 'T3', role: 'PM', sex: 'Man', age: 32, address: 'Shanghai' },
  { id: 10004, name: 'Test4', nickname: 'T4', role: 'Designer', sex: 'Women', age: 23, address: 'test abc' },
  { id: 10005, name: 'Test5', nickname: 'T5', role: 'Develop', sex: 'Women', age: 30, address: 'Shanghai' },
  { id: 10006, name: 'Test6', nickname: 'T6', role: 'Designer', sex: 'Women', age: 21, address: 'Shenzhen' },
  { id: 10007, name: 'Test7', nickname: 'T7', role: 'Test', sex: 'Man', age: 29, address: 'Shenzhen' },
  { id: 10008, name: 'Test8', nickname: 'T8', role: 'Develop', sex: 'Man', age: 35, address: 'test abc' },
  { id: 10009, name: 'Test9', nickname: 'T9', role: 'Develop', sex: 'Man', age: 35, address: 'Shenzhen' },
  { id: 100010, name: 'Test10', nickname: 'T10', role: 'Develop', sex: 'Man', age: 35, address: 'Guangzhou' },
  { id: 100011, name: 'Test11', nickname: 'T11', role: 'Develop', sex: 'Man', age: 49, address: 'Guangzhou' },
  { id: 100012, name: 'Test12', nickname: 'T12', role: 'Develop', sex: 'Women', age: 45, address: 'Shanghai' },
  { id: 100013, name: 'Test13', nickname: 'T13', role: 'Test', sex: 'Women', age: 35, address: 'Guangzhou' },
  { id: 100014, name: 'Test14', nickname: 'T14', role: 'Test', sex: 'Man', age: 29, address: 'Shanghai' },
  { id: 100015, name: 'Test15', nickname: 'T15', role: 'Develop', sex: 'Man', age: 39, address: 'Guangzhou' },
  { id: 100016, name: 'Test16', nickname: 'T16', role: 'Test', sex: 'Women', age: 35, address: 'Guangzhou' },
  { id: 100017, name: 'Test17', nickname: 'T17', role: 'Test', sex: 'Man', age: 39, address: 'Shanghai' },
  { id: 100018, name: 'Test18', nickname: 'T18', role: 'Develop', sex: 'Man', age: 44, address: 'Guangzhou' },
  { id: 100019, name: 'Test19', nickname: 'T19', role: 'Develop', sex: 'Man', age: 39, address: 'Guangzhou' },
  { id: 100020, name: 'Test20', nickname: 'T20', role: 'Test', sex: 'Women', age: 35, address: 'Guangzhou' },
  { id: 100021, name: 'Test21', nickname: 'T21', role: 'Test', sex: 'Man', age: 39, address: 'Shanghai' },
  { id: 100022, name: 'Test22', nickname: 'T22', role: 'Develop', sex: 'Man', age: 44, address: 'Guangzhou' }
]

export default Vue.extend({
  data () {
    const pagerVO = {
      total: 0,
      currentPage: 1,
      pageSize: 10
    }

    const gridOptions: VxeGridProps<RowVO> = {
      showOverflow: true,
      border: true,
      loading: false,
      height: 500,
      rowConfig: {
        keyField: 'id'
      },
      checkboxConfig: {
        reserve: true,
        showReserveStatus: true
      },
      pagerConfig: pagerVO,
      columns: [
        { type: 'checkbox', width: 60 },
        { field: 'name', title: 'Name', minWidth: 160 },
        { field: 'email', title: 'Email', minWidth: 160 },
        { field: 'nickname', title: 'Nickname', minWidth: 160 },
        { field: 'age', title: 'Age', width: 100 },
        { field: 'role', title: 'Role', minWidth: 160 },
        { field: 'amount', title: 'Amount', width: 140 },
        { field: 'updateDate', title: 'Update Date', visible: false },
        { field: 'createDate', title: 'Create Date', visible: false }
      ],
      data: []
    }

    return {
      gridOptions,
      pagerVO
    }
  },
  methods: {
    // 模拟前端分页
    handlePageData  () {
      this.gridOptions.loading = true
      setTimeout(() => {
        const { pageSize, currentPage } = this.pagerVO
        this.pagerVO.total = allList.length
        this.gridOptions.data = allList.slice((currentPage - 1) * pageSize, currentPage * pageSize)
        this.gridOptions.loading = false
      }, 100)
    },
    pageChangeEvent ({ pageSize, currentPage }) {
      this.pagerVO.currentPage = currentPage
      this.pagerVO.pageSize = pageSize
      this.handlePageData()
    },
    getSelectEvent () {
      const $grid = this.$refs.gridRef as VxeGridInstance<RowVO>
      if ($grid) {
        const selectRecords = $grid.getCheckboxRecords()
        const selectReserveRecords = $grid.getCheckboxReserveRecords()
        VxeUI.modal.message({
          content: `总共勾选： ${selectRecords.length + selectReserveRecords.length} 条，当前页勾选：${selectRecords.length} 条，已保留勾选：${selectReserveRecords.length} 条`,
          status: 'success'
        })
      }
    }
  },
  created () {
    this.handlePageData()
  }
})
</script>
